package cn.wolfcode.cmis.filter;

import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

/**
 * 登录校验过滤器
 */
@WebFilter("/lol/*")
public class CheckLoginFilter implements Filter {

    @Override
    public void init(FilterConfig filterConfig) throws ServletException {

    }

    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
        HttpServletRequest request = (HttpServletRequest) servletRequest;
        HttpServletResponse response = (HttpServletResponse) servletResponse;
        Object user = request.getSession().getAttribute("USER_IN_SESSION");
        if (user == null) {
            response.sendRedirect("/login.jsp");
            return;
        }
        //否则放行
        filterChain.doFilter(request,response);
    }

    @Override
    public void destroy() {

    }
}
